//
//  NSNull+PACANull.h
//  ICrEAM
//
//  Created by rainimute on 16/12/21.
//  Copyright © 2016年 mac. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSNull (PACANull)

@property (nonatomic, assign) NSInteger length;

- (BOOL)isEqualToString:(NSString*)aString;

- (id)objectAtIndex:(NSUInteger)index;

- (void)addObject:(id)anObject;

- (void)removeObject:(id)anObject;

- (void)removeObjectAtIndex:(NSUInteger)index;

- (void)setObject:(id)anObject forKey:(NSString*)aKey;

@end
